Microsoft Edge/ChakraCore Chakra Scripting Engine memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Edge and ChakraCore and classified as critical. This impacts an unknown function of the component Chakra Scripting Engine. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2019-0567. It is possible to launch the attack remotely. Furthermore, an exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Edge and ChakraCore (Web Browser) (the affected version is unknown). Affected by this issue is an unknown code of the component Chakra Scripting Engine. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The bug was discovered 01/08/2019. The weakness was published 01/08/2019 by lokihardt with Qihoo 360 Vulcan Team as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release has been coordinated with the vendor. This vulnerability is handled as CVE-2019-0567 since 11/26/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. The advisory points out:

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 121011 (KB4480116: Windows 10 Version 1809 and Windows Server 2019 January 2019 Security Update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91493 (Microsoft Edge Security Update for January 2019).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (46203), Tenable (121011) and SecurityFocus (BID 106418†). Similar entries are available at VDB-128717, VDB-128718, VDB-128719 and VDB-128721. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.2
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 121011
Nessus Name: KB4480116: Windows 10 Version 1809 and Windows Server 2019 January 2019 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/26/2018 🔍
01/08/2019 +43 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
10/12/2025 +2469 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: lokihardt
Organization: Qihoo 360 Vulcan Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2019-0567 (🔍)
GCVE (CVE): GCVE-0-2019-0567
GCVE (VulDB): GCVE-100-128720
SecurityFocus: 106418 - Microsoft Edge Chakra Scripting Engine CVE-2019-0567 Remote Memory Corruption Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/08/2019 21:53
Updated: 10/12/2025 21:45
Changes: 01/08/2019 21:53 (85), 05/26/2020 16:47 (10), 06/23/2023 09:04 (4), 10/12/2025 21:45 (14)
Complete: 🔍
Cache ID: 216::103

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